Knife-cylinder



(No Model.)

E. w". SAIBERLIGH. KNIFE CYLINDER.

No. 577,069. Pamtenuedfeb.16,1897.

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UNITED STATES PATENT OFFICE.

EDIVARD \V. SAIBERLICH, OF APPLETON, WVISOONSIN.

KNIFE-CYLINDER.

SPECIFICATION forming part of Letters Patent No. 577,069, dated February16, 1897. Application filed June 13, 1896. Serial No. 595,438- (Nomodel.)

clamped to the shaft and is held fast thereto,

so as to revolve therewith under the ordinary cutting strain to whichknives are subjected; but in case any hard or unyielding substanceaccidentally runs in between the knives the cylinder is adapted to slipon the shaft until the momentum of the fly-wheel gradually decreases, soas to bring said fly-wheel and its shaft to rest.

\Vith'the above primary object in view the invention consists of thedevices and parts or their equivalents, as hereinafter more fully setforth.

In the accompanying drawings, Figure 1 is an end view of my improved"knife-cylinder applied to a shaft. Fig. 2 is a front elevation ofFig. 1. Fig. 3 is adetail view of one of the half-sections of thecylinder. Fig. 4 is an end view of a modified form, and Fig. 5is asection on the line 5 5 of Fig. 4.

Referring to the drawings, the numeral 6 indicates a shaft of afeed-cutter or similar machine, said shaft being driven by any suitablemeans and provided with the usual flywheel. (Not shown.) The improvedknifecylinder is adapted to be clamped to this shaft, and said cylinderis composed of two similar half-sections, each consisting of ahalf-circular elongated bearing '7 7, respectively, adj usted togetherlongitudinally about the shaft and provided at opposite ends with theend enlargements 8 8, respectively, from which enlargements a series oflegs or projections radiate. The legs on one of the end enlargements ofsection '7 are indicated by the numeral 9 and the legs of the oppositeend piece by the numeral 9, while the legs of the oppositeendenlargements of the other halfsection 7 are indicated by the numerals1O 10, respectively. I

Then the two sections of the cylinder are adjusted to the shaft, asshown in Figs. 1 and 2, it will be noticed that the half-circularbearings form a'complete circular bearing about the shaft, while the endpieces of the respective sections fit together and register. The legs 99 and 10 lOare preferably not in direct alinement, (see Figs. 1 and 2,)so that when the opposite ends of the knives are connected thereto saidknives will present more or less of a spiral shape. Each leg is formedat its outer end with a foot 11, extending at right angles thereto. Uponthese feet the ends of the knives 12 areplaced, said knives being heldthereto by means of bolts 13, which pass through elongated slots 14 inthe feet, said bolts being provided upon their ends with nuts 15, bywhich they maybe tightened. At the heel of each foot is provided aprojecting lug 16, through which a set-screw 17 passes and engages theback edge of the knifeblade. This screw permits of the proper adjustmentof the blade being obtained, such being accomplished merely byloosening the nuts 15 and then turning the set-screws so as to force theblades forwardlyior rearwardly, as desired.

The half-bearing of each section is advisably provided with interiorshoulders 18 18,

against which corresponding shoulders on theshaft (not shown) fit andprevent longitudinal movement of said shaft.

In order to securely clamp the two half-sections on the shaft againstmovement under ordinary strain, I provide the ends of the respectivehalf-sections with inwardly-extending registering lugs 19 19,respectively, through which screw-bolts 20 20 pass, said bolts providedupon their threaded ends with nuts 21 21. By tightening up these nuts itis obvious that the two sections may be drawn firmly together.

While I have herein shown and described the legs at the opposite ends ofthe cylinder as disposed out of alinement, so as to bring the blades ona spiral, yet I do not wish to be understood as restricting myselfthereto, inasmuch as, if preferred, said legs may be arranged directlyopposite each other longitudinally, so that the blades will be disposedin a straight line.

The two sections when clamped to the shaft in the manner described willbe held thereto with sufficient firmness to withstand the ordinarystrain resulting from the cutting of the feed. If, however, anyparticularly hard substance, such as metal, should get in between theknives, the cylinder will simply slip around on the shaft until themomentum of the fly-wheel ceases.

Another advantage possessed by my construction resides in the fact thatthe two ends of the cylinder are connected by the elongatedhalf-bearings 7 7, whereby the cylinder-knives are retained in a fixedposition. In structures wherein separate cylinder-heads are provided,keyed or otherwise secured to the shaft, in the event of one headbecoming loose all support for that end of the knives is lost.Furthermore, it will be seen that my improved knife-cylinder is veryreadily removed from the shaft and affixed thereto. Its adaptability forready removal permits a cylinder-head with a different arrangement ofknives to be readily substituted.

In Figs. 4 and 5 I show a modified form of the cylinder-head, whereinthe half-bearing 7 is provided with the solid end pieces 22 22 and thehalf-section 7 with similar registering solid end pieces 2-3 23. Theseend pieces are provided, respectively, with the outwardly-extendingpartly-circular registering flanges 2a 2% and 25 25. Transverse bars 26extend across from one flange to the other and are secured thereto bymeans of bolts 27. These cross-pieces are provided with projectingknives or shredding-fingers 28. In order to clamp the cylinderillustrated in Figs. 4 and 5 to the shaft 6, the end pieces are providedwith the projecting registering lugs 20 29, through which thesecuring-bolts 30 are passed.

What I claim as my invention is- 1. I11 a knife-cylinder, thecombination, with a shaft, of two registering elongated partly-circularbearings, having projections radiating from the registering endsthereof, blades connecting said projections, and means for clamping thehalf-sections to the shaft, whereby said sections revolve with the shaftunder ordinary strain, but slip on said shaft under abnormal strain.

2. In a knife-cylinder, the combination, with a shaft, of tworegistering elongated partly-circular bearings having projectionsradiating from the registering ends thereof, said projections providedat their outer ends with feet having elongated slots therethrough, saidfeet provided at their heels with lugs, blades connecting the feet ofopposite projections, bolts passing through said blades and through theelongated slots of the feet, nuts on the threaded ends of said bolts,setscrews passing through the lugs and bearing against the back edges ofthe blade, and means for clamping the half-sections to the shaft,whereby said sections revolve with the shaft under ordinary strain, butslip on said shaft under abnormal strain.

In a knife-cylinder, the combination,

with a shaft, of two registering elongated partly-circular bearin sprovided with registering end enlargements, projections radiating fromsaid end enlargements, registering lugs also extending from therespective end enlargementsclam pin gbolts passingthrou gh said lugs,and blades connecting the projections.

In testimony whereof I affix my signature in presence of two witnesses.

EDWARD IV. SAIBERLICH. IV itnesses:

T. H. RYAN, JAcoB CRIDER.

